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(No Model.)

G. L. TYLER] KNIFE FOR LEATHER SPLITTING MACHINES.

No. 342,983. Patented June 1, 1886.

UNITED STATES PATENT OFFICE.

GEORGE L. TYLER, OF LYNN, MASSACHUSETTS, ASSIGNOR TO THE TYLER I BRADFORD M AOHINE COMPANY.

KNIFE FOR LEATHER-SPLITTING MACHINES.

SPECIFICATION forming part of Letters Patent No. 342,983, dated June 1, 1886.

Application filed August 37, 1885. Serial No. 175,450.

I all whom it may concern.-

Be it known that I, GEORGE L. TYLER, of Lynn, county of Essex, State of Massachusetts, have invented certain new and useful Improvements in Knives for Leather-Splitting Machines, of which the following is a. full, clear, concise, and exact description, reference being had to the drawings accompanying and forming a part thereof, in which- Figure l is a plan view. Fig. 2 is a section on line as m, Fig. 1. Fig. 3 is a section on line y y, Fig. 1.

The object of my'iuvention is the construction of a knife for use in a machine for splitting leather or other like material; and it consists in the peculiarites of construction hereinafter described.

My improved knife is designed more especially for use in a machine such as is shown and described in Letters Patent of the United States granted to me dated June 2, 1885, No. 319,357, although, as will be obvious, it may be adapted for use in other well-known forms of splitting-machines.

In machines of the class shown in said Letters Patent above mentioned the leather is split to a hinge at one edge, and my improved knife is particularly adapted to this work.

A is the body of the knife, and Bits bev eled edges. The splitting edge of the knife is shown at a, and the corners b are sharpened to form cutting-corners. The edges are beveled (No model.)

on both sides, thus constituting a double bevel,

as shown, and the ends of the knife form slightly-acute angles with the cutting-edge a that is, the ends run inwardly toward the body of the knife, forming a blade which is broader along its cutting-edge than it is along line ac x. This peculiar construction removes the objection which has hitherto existed with this kind of knifenamely, the friction which resulted in forcing the hinged side of the leather past the end of the knife.

Knives constructed in the manner above described may be ground down when required to he sharpened without losing their'form, and may be readily adjusted by reason of the slots D D, by means of which they are secured in position in the machine, and, as but one end of the knife is in use at a time, when this end becomes dulled or the cutting-corner rounded, the knife may be turned over and the other end used before sharpening.

A splitting-machine knife having a cuttingedge and sharpened ends, all of which are beveled on both sides, the length of the cutting-edge being greater than the width of the knife at any point rearward of the said edge, substantially as set forth.

GEORGE L. TYLER.

Witnesses:

WM. A. ll/IAOLEOD, M. A. THOMPSON. 

